Tagged Questions

iOS is Apple's operating system for mobile devices, such as the iPhone, iPod touch, iPad and Apple TV (2nd generation and up). Much is shared with OS X, but iOS is optimized for touch-based interfaces.

I need to take a screenshot when user presses a button. I dont know how to combine those 2 methods.. one for saving a picture to photo album and other to take a proper screenshot. Could anyone please ...

I've read the apple guidelines and it suggests using the first view as the launch screen to make your app appear to load quicker, only without the text, etc. I've tried to use a storyboard and launch ...

I know how to make that in gamescene.sks – you just need to select a sprite and check "alpha mask" in body type form.
But how to do it programmatically? I'm afraid that my manipulations with .sks will ...

I'm trying to achieve an effect where every fifth element in an array of sublayers is animated. However when I delve into the code, I either get all of the animations or none at all! Any idea what I ...

I'm trying to create ads in my application and send them to my database. Already gone through many mistakes and seem to be increasingly the next result. However I am now getting a dialog box with the ...

How can I erase a part of NSString or NSArray after a word, for example #gallery-1 or after two "skip lines" ? And is it possible to delete a sentence that appears every time ?
I would like to erase ...

I would like to perform the following in my app: When the app is launched for the first time, I would like it to measure the screen height and according to the result, download the specific textures ...

I have been creating my first iOS app for iPhone (iOS 8) since last year (iOS 7).
My iPhone app launches perfectly, loads the launch images properly, and then loads up a black screen. You can see the ...

I have a UITabBarController linked to 4 view controllers each embedded in a NavigationViewController.
I need to check if when one of these view controllers is currently selected, and the user clicks ...

I'm trying to add a "favorite button" to a custom cell in a UIableView.
The cell has a label and detailLabel that show fine. I must be doing something wrong but I can't figure out what it is. My code ...

I have a UIWebView which I can drag through a UIPanGestureRecognizer. During a drag, I want to prevent user interactions with the UIWebView. Conveniently, the property userInteractionEnabled of the ...

I am learning and translating some very old fixed function OpenGL (on desktop) into modern OpenGL (iOS). I have translated all of the verts, colors, and texturing but am stuck on these two lines and ...

We were running into issues trying to add a test target to a project we inherited. The test target was working, however Running the app would always fail due to an error in the test target. We were ...

I found this style on cocoapods (https://github.com/Sumi-Interactive/SIAlertView) and changed all of alert views in the app from the default view to this. I want to know if I can change the style of ...

I have a question about png-8 vs png-24 usage vs Xcode's built in "image compressor".
Some images converted to png-8 are just fine saved like that, because difference between png-24 version can't be ...

We are using Azure Mobile Services to Push notifications to a Xamarin Android and a Xamarin iOS and a Windows Universal App. The Windows Universal App has plenty of documentation around what we need, ...

I'm having this error "unrecognized selector sent to instance" when I click on the button "cadastrar" to register my new announcement of a aplicatiov to the database. I'm using restkit and my api is ...

When I pick an image from UIImagePicker with sourceType PhotoLibrary... that's a square... with allowsEditing flag set to true, the image by default sits ~18px down from where it should be
Any ideas ...

Getting the updated frame with AutoLayouts it is a problem, that I know and been through it's solutions. All solutions are very much efficient but my problem has a limp.
Things I have done :
I have ...

I'm creating an iOS app and I wanted to include the launch images. I created the ressource using XCode in Images.xcassets but the ressource contains 20 different formats. Moreover, XCode doesn't allow ...